.clearfix:after {
    content: '';
    display: block;
    height: 0;
    visibility: hidden;
    clear: both;
}

.fl-left {
    float: left;
}

.fl-right {
    float: right;
}

.mg {
    margin: 10px !important;
}

.left-mg-xs {
    margin-left: 6px !important;
}

.left-mg-sm {
    margin-left: 10px !important;
}

.left-mg-md {
    margin-left: 14px !important;
}

.top-mg-lg {
    margin-top: 20px !important;
}

.tb-mg-lg {
    margin: 20px 0 !important;
}

.bottom-mg-lg {
    margin-bottom: 20px !important;
}

.left-mg-lg {
    margin-left: 18px !important;
}

.title-1 {
    text-align: center;
    font-size: 32px;
}

.title-3 {
    text-align: center;
}

.keyword{
  width: 220px;
  margin: 0 0 0 30px;
}

#nprogress .bar {
    background: #4D70FF !important; //自定义颜色
}

.flex-row {
    display: flex;
    flex-direction: row;
    box-sizing: border-box;
}

.flex-column {
    display: flex;
    flex-direction: column;
    box-sizing: border-box;
}

.a_c {
    align-items: center;
}

.a_e {
    align-items: flex-end;
}

.j_b {
    justify-content: space-between;
}

.j_c {
    justify-content: center;
}

.j_e {
    justify-content: flex-end;
}

.j_a {
    justify-content: space-around;
}

.flex_1 {
    flex: 1;
}

.flex_0 {
    flex-shrink: 0;
}

.flex-wrap {
    flex-wrap: wrap;
}